What is the tool the diver puts on his nose when diving in Arabic name?

The tool that a diver puts on his nose when diving is called "مُنَخِّر" (pronounced: munakher) in Arabic. This device helps to equalize pressure in the diver's ears and sinuses. Some divers may also use a nose clip, referred to as "مِشْبَك الأنف" (mishbak al-anf).